The yellow wasps are generally found in Texas, Arizona, and New Mexico. The bright yellow color of the wasp is its main identifying feature. A cold pack may be used to relieve the pain of the sting. Yellow Paper Wasp (Polistes flavus) The yellow paper wasp is a brightly colored sizeable vespid wasp with an orangey-yellow thorax, yellow abdomen, yellow legs, and brown wings. Indirect spillover to other hymenopteran genera, such as Polistes, has been documented, but the exact means is still under investigation as of Santamaria et al., 2017. It is known to be spread from the mite, Varroa descructor, to honeybees. Seven deaths over a twenty-year period attributed to wasp stings have been recorded in Australia, mainly among known allergy sufferers who were not carrying their preventative medicine with them. Polistes is one of several genera affected by the deformed wing virus. Immunotherapy or desensitisation therapy is also available, and can reduce the severity of the allergy. Effective treatment is available, which involves known bee/ant/wasp sting allergy sufferers carrying a special kit when outdoors. In some individuals, wasp, bee and ant stings can cause an allergic reaction (anaphylaxis), but this is relatively uncommon. If stings are multiple, a more severe systemic reaction may occur. The nests are shaped like inverted cones, and consist of a. They normally only attack humans if their nest is disturbed. Paper wasps form small colonies, and make paper nests under tree branches and the eaves of houses. Paper wasps can deliver painful stings, but are not as aggressive as European Wasps. The wasp larvae are maggot-like and develop inside the papery cells of the nest. The nests are shaped like inverted cones, and consist of a cluster of hexagonal cells made from wood fibre mixed with saliva. They create their nests out of plant materials and saliva and as their name. Paper wasps form small colonies, and make paper nests under tree branches and the eaves of houses. Paper wasps are a type of wasp that feeds on the nectar and pollen of plants.